The AD7666* is a 16-bit, 500 kSPS, charge redistribution SAR analog-to-digital converter that operates from a single 5 V power supply. The part contains a high speed, 16-bit sampling ADC, an internal conversion clock, internal reference, error correction circuits, and both serial and parallel system inter- face ports. The AD7666 is hardware factory-calibrated and comprehensively tested to ensure ac parameters such as sign alto-noise ratio (SNR) and total harmonic distortion (THD), in addition to the more traditional dc parameters of gain, offset, and linearity. The AD7666 is available in a 48-lead LQFP and a tiny 48-lead LFCSP, with operation specified from -40oC to +85oC. *Patent Pending.